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a115433



Joined: 05 Mar 2010
Posts: 144
a115433
I want to write my own syntax assembler/disassembler, and i have few questions.

Can i have a list of ALL x86 architectures? i ont know how to name them, but i belive its 286, 386, 486, ... ? i want my assembler to have directive wich will encode instructions to specyfied architecture (eg. pop cs).

I dont want to integrate file formats (elf/coff). How should i write, to be able to use linker on my output?
My compiler will just encode instructions, and write output. Should i use special symbols or something? How will linker know how to handle my file?
Should i write my own linker? Or should i write linker inside compiler, wich i try to avoid? From my understanding, linker should need 2 files. 1 with raw code, and second with special directives. And this approach i want to follow.

What language should i use? For 99% i will use C, but im open to other suggestions.
Post 08 Apr 2010, 10:52
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edfed



Joined: 20 Feb 2006
Posts: 4240
Location: 2018
edfed
first, code your assembler for your own CPU in order to do selfcompilation.
after you will see what instructions you can add.
use fasm as a starting language. Very Happy
if not, i don't see why you are asking there.
Post 08 Apr 2010, 11:22
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a115433



Joined: 05 Mar 2010
Posts: 144
a115433
if i use asm as starting language, i will have to make version for 16, 32, and 64 bit.
if i use C, i could cover all, and even more (ia64, arm). I belive if code in c is simple, it produce same result on all platforms.

what about instruction set diffrences? where will i get list of all intel/amd/any others? cpus wich i must support?
Post 08 Apr 2010, 11:35
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edfed



Joined: 20 Feb 2006
Posts: 4240
Location: 2018
edfed
Quote:
where will i get list of all intel/amd/any others?

in the faq on this forum; Wink
Post 08 Apr 2010, 11:49
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cod3b453



Joined: 25 Aug 2004
Posts: 619
cod3b453
A good source is http://ref.x86asm.net/, this covers all x86 instructions for encoding/decoding purposes. You can also get the IA64 and ARM encodings from their respective manuals.
Post 08 Apr 2010, 11:56
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zhak



Joined: 12 Apr 2005
Posts: 490
Location: Belarus
zhak
i don't think it's a good idea to start such a project as assembler/disassembler when one still asks questions like "Can i have a list of ALL x86 architectures?". This will lead to a dead-end.
Post 08 Apr 2010, 13:28
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